<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by richarddd:
If you're losing miles on the round trip, it's likely a bad idea. Will anyone let you do 1:1?</font>
Not under normal circumstances. Perhaps if Diner's ever ran a BA-like promotion with AA, you could get 50,000 miles in at 1:1. But typically, double-conversions result in a loss of value. Otherwise, things would be so easy that AA would have to modify their existing Lifetime status rules.